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http://phonopy.sourceforge.net/auxiliary-tools.html

bandplot
Band structure is plotted reading phonopy output in band.yaml format. -o option with a file name is used to save the plot into a file in PDF format. A few more options are prepared and shown by -h option. If you specify more than two yaml files, they are plotted together.

bandplot band.yaml
To obtain a simple text format data:

bandplot --gnuplot band.yaml

Èç¹ûÄãÏë°ÑÊý¾Ý·ÅÔÚ origin µÈÈí¼þÀïÃæ»­Í¼£¬Ö±½ÓÖ´ÐÐ

bandplot --gnuplot band.yaml > band.dat

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